A Hydrodynamic Model for Slug Frequency in Horizontal Gas-Liquid Two-Phase Flow

Abstract

Abstract: The prediction of slug frequency has important significance on gas-liquid two-phase flow. A
hydrodynamic model was put forward to evaluate slug frequency for horizontal two-phase
flow, based on the dependence of slug frequency on the frequency of unstable interfacial
wave. Using air and water, experimental verification of the model was carried out in a
large range of flow parameters. Six electrical probes were installed at different positions
of a horizontal plexiglass pipe to detect slug frequency development. The pipe is 30 m long
and its inner diameter is 24 mm. It is observed experimentally that the interfacial wave
frequency at the inlet is about 1 to 3 times the frequency of stable slug. The slug
frequencies predicted by the model fit well with Tronconi (1990) model and the experimental
data. The combination of the hydrodynamic model and the experimental data results in a
conclusion that the frequency of equilibrium liquid slug is approximately half the minimum
frequency of interfacial wave.

Key words: gas-liquid flow, two-phase flow, interfacial wave, hydrodynamic model, slug frequency

摘要： The prediction of slug frequency has important significance on gas-liquid two-phase flow. A
hydrodynamic model was put forward to evaluate slug frequency for horizontal two-phase
flow, based on the dependence of slug frequency on the frequency of unstable interfacial
wave. Using air and water, experimental verification of the model was carried out in a
large range of flow parameters. Six electrical probes were installed at different positions
of a horizontal plexiglass pipe to detect slug frequency development. The pipe is 30 m long
and its inner diameter is 24 mm. It is observed experimentally that the interfacial wave
frequency at the inlet is about 1 to 3 times the frequency of stable slug. The slug
frequencies predicted by the model fit well with Tronconi (1990) model and the experimental
data. The combination of the hydrodynamic model and the experimental data results in a
conclusion that the frequency of equilibrium liquid slug is approximately half the minimum
frequency of interfacial wave.

关键词: gas-liquid flow;two-phase flow;interfacial wave;hydrodynamic model;slug frequency

LIU Lei, SUN Hedong, HU Zhihua, ZHOU Fangde . A Hydrodynamic Model for Slug Frequency in Horizontal Gas-Liquid Two-Phase Flow[J]. .

刘磊, 孙贺东, 胡志华, 周芳德. 水平管气液两相弹状流液弹频率的水动力学新模型[J]. CIESC Journal.

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